/*
midi-walker.cc -- implement Midi_walker
- source file of the LilyPond music typesetter
+ source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>, Jan Nieuwenhuizen <jan@digicash.com>
-*/
+ (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
+ */
-#include "musicalrequest.hh"
-#include "pscore.hh"
-#include "staff.hh"
#include "midi-walker.hh"
+#include "audio-column.hh"
+#include "audio-item.hh"
+#include "audio-staff.hh"
#include "midi-item.hh"
#include "midi-stream.hh"
#include "debug.hh"
-#include "staff-column.hh"
-Midi_walker::Midi_walker(Staff *st_l, Midi_track* track_l)
- : PCursor<Staff_column*>(st_l->cols_)
+Midi_note_event::Midi_note_event ()
+{
+ ignore_b_ = false;
+}
+
+int
+compare (Midi_note_event const& left, Midi_note_event const& right)
+{
+ return sign (left.key - right.key);
+}
+
+Midi_walker::Midi_walker (Audio_staff* audio_staff_l, Midi_track* track_l)
{
- track_l_ = track_l;
- last_moment_= 0;
+ track_l_ = track_l;
+ index_= 0;
+ item_l_arr_l_ = &audio_staff_l->audio_item_l_arr_;
+ last_mom_ = 0;
+}
+
+Midi_walker::~Midi_walker ()
+{
+ // ugh
+ do_stop_notes (last_mom_ + Moment (10, 1));
}
/**
- output notestop events for all notes which end before #max_moment#
+ Find out if start_note event is needed, and do it if needed.
*/
-void
-Midi_walker::do_stop_notes(Moment max_moment)
+void
+Midi_walker::do_start_note (Midi_note* note_p)
{
- while (stop_notes.size() && stop_notes.front_idx() <= max_moment) {
- Moment stop_moment = stop_notes.front_idx();
- Melodic_req * req_l = stop_notes.get();
-
- Midi_note note(req_l, track_l_->number_i_, false);
- output_event(note, stop_moment);
+ Audio_item* ptr = (*item_l_arr_l_)[index_];
+ Moment stop_mom = note_p->length_mom () + ptr->audio_column_l_->at_mom ();
+
+ bool play_start = true;
+ for (int i=0; i < stop_note_queue.size (); i++)
+ {
+ /* if this pith already in queue */
+ if (stop_note_queue[i].val->pitch_i () == note_p->pitch_i ())
+ {
+ if (stop_note_queue[i].key < stop_mom)
+ {
+ /* let stopnote in queue be ignored,
+ new stop note wins */
+ stop_note_queue[i].ignore_b_ = true;
+ /* don't replay start note, */
+ play_start = false;
+ break;
+ }
+ else
+ {
+ /* skip this stopnote,
+ don't play the start note */
+ delete note_p;
+ note_p = 0;
+ break;
+ }
+ }
+ }
+
+ if (note_p)
+ {
+ Midi_note_event e;
+ e.val = new Midi_note_off (note_p);
+ e.key = stop_mom;
+ stop_note_queue.insert (e);
+
+ if (play_start)
+ output_event (ptr->audio_column_l_->at_mom (), note_p);
}
}
+
/**
- Find out if start_note event is needed, and do it if needed.
+ Output note events for all notes which end before #max_mom#
*/
-void
-Midi_walker::do_start_note(Note_req*note_l)
+void
+Midi_walker::do_stop_notes (Moment max_mom)
{
- Moment stop=note_l->duration() + ptr()->when();
- for(int i=0; i < stop_notes.size(); i++)
- if (stop_notes.value_arr_[i]->melodic()->pitch() ==
- note_l->pitch()) {
- if ( stop_notes.indices_arr_[i] < stop){
-
- stop_notes.del(i);
- return ; // removing this gives a feature ( ${c2 c4}$ output correctly)
- }
- else
- return; // skip the stop note
- break;// do the stop note
+ while (stop_note_queue.size () && stop_note_queue.front ().key <= max_mom)
+ {
+ Midi_note_event e = stop_note_queue.get ();
+ if (e.ignore_b_)
+ {
+ delete e.val;
+ continue;
}
-
- stop_notes.enter(note_l, stop);
- Midi_note note(note_l, track_l_->number_i_, true);
- output_event(note, ptr()->when());
+
+ Moment stop_mom = e.key;
+ Midi_note* note_p = e.val;
+
+ output_event (stop_mom, note_p);
+ }
}
-
-/** advance the track to #now#, output the item, and adjust current
- "moment". */
+/**
+ Advance the track to #now#, output the item, and adjust current "moment".
+ */
void
-Midi_walker::output_event(Midi_item &i, Moment now)
+Midi_walker::output_event (Moment now_mom, Midi_item* l)
{
- Moment delta_t = now - last_moment_ ;
- last_moment_ += delta_t;
- track_l_->add(delta_t, &i );
+ Moment delta_t = now_mom - last_mom_ ;
+ last_mom_ += delta_t;
+ track_l_->add (delta_t, l);
}
void
-Midi_walker::process_requests()
+Midi_walker::process ()
{
- do_stop_notes(ptr()->when());
- for ( int i = 0; i < ptr()->musicalreq_l_arr_.size(); i++ ) {
-
- Rhythmic_req *n = ptr()->musicalreq_l_arr_[i]->rhythmic();
- if ( !n)
- continue;
- Note_req * note_l = n->note();
- if (!note_l)
- continue;
- do_start_note(note_l);
-
+ Audio_item* audio_p = (*item_l_arr_l_)[index_];
+ do_stop_notes (audio_p->audio_column_l_->at_mom ());
+
+ /*
+ THIS IS A MEMORY LEAK. FIXME.
+ where's the leak? Everything goet to Midi_track, in a killing_cons.
+ */
+ if (Midi_item* midi_p = Midi_item::midi_p (audio_p))
+ {
+ midi_p->channel_i_ = track_l_->channel_i_;
+ //midi_p->channel_i_ = track_l_->number_i_;
+ if (Midi_note* note_p = dynamic_cast<Midi_note*> (midi_p))
+ {
+ if (note_p->length_mom ())
+ do_start_note (note_p);
+ }
+ else
+ output_event (audio_p->audio_column_l_->at_mom (), midi_p);
}
}
-Midi_walker::~Midi_walker()
+bool
+Midi_walker::ok () const
+{
+ return index_ <item_l_arr_l_->size ();
+}
+
+void
+Midi_walker::operator ++ (int)
{
- do_stop_notes( last_moment_ + Moment(10,1)); // ugh
+ assert (ok ());
+ index_++;
}